<p>The catalytic activity of a chromium oxide-based catalyst used in the production of chlorine by oxidation of hydrogen chloride gas with an oxygen-containing gas is regenerated by impregnating it with an aqueous solution of chromic acid anhydride or of a chromium salt and then calcining the catalyst at a temperature not higher than 800 DEG C.</p>
申请公布号
EP0432909(B1)
申请公布日期
1994.02.02
申请号
EP19900312426
申请日期
1990.11.14
申请人
MITSUI TOATSU CHEMICALS, INC.
发明人
YOSHIKAWA, YUKIHIRO;HIHARA, TOORU;YAMADA, KUNIHIRO;TAKENAKA, SHINJI;KAWAHARA, KAZUNORI;KITAGAWA, JUN